The Pan-STARRS1 Science Consortium was formed to carry out surveys with the 7 square degree camera on the 1.8m PS1 telescope. The whole visible sky north of declination -30 degrees has been covered approximately 12 times in each of the filters grizy, making up the "3 Pi" survey. Ten medium deep fields (a total of 70 square degrees) were observed with nightly cadence along with an M31 dedicated campaign and a search for transiting planets. The consortium plans to make the data public through STScI archive in 2015. This talk will review the science highlights so far from Pan-STARRS1 and illustrate the scientific promise and legacy of this immense data set.